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Intangible Assets - Schedule of Intangible Assets (Detail) (USD $) In Thousands, unless otherwise specified | 12 Months Ended
--- | ---
Dec. 31, 2013 | Dec. 31, 2012
Indefinite-lived Intangible Assets [Line Items] |  |
Net balance at December 31, 2011 | $ 6,507 | $ 8,091
Net foreign currency translation | 67 | (17)
Amortization expense | (3,325) | (1,910)
Net balance at December 31, 2012 | 16,733 | 6,507
December 31, 2013 balance at cost | 32,913 |
Accumulated amortization | (16,180) |
Net balance at December 31, 2013 | 16,733 | 6,507
Other Acquisitions [Member] |  |
Indefinite-lived Intangible Assets [Line Items] |  |
Additions | 227 | 343
Cronto [Member] |  |
Indefinite-lived Intangible Assets [Line Items] |  |
Additions | 13,257 |
Capitalized Technology [Member] |  |
Indefinite-lived Intangible Assets [Line Items] |  |
Net balance at December 31, 2011 | 4,847 | 6,693
Net foreign currency translation | 6 | (17)
Amortization expense | (3,014) | (1,829)
Net balance at December 31, 2012 | 13,776 | 4,847
December 31, 2013 balance at cost | 29,432 |
Accumulated amortization | (15,656) |
Net balance at December 31, 2013 | 13,776 | 4,847
Capitalized Technology [Member] | Other Acquisitions [Member] |  |
Indefinite-lived Intangible Assets [Line Items] |  |
Additions | 0 | 0
Capitalized Technology [Member] | Cronto [Member] |  |
Indefinite-lived Intangible Assets [Line Items] |  |
Additions | 11,937 |
Patents and Trademarks [Member] |  |
Indefinite-lived Intangible Assets [Line Items] |  |
Net balance at December 31, 2011 | 1,642 | 1,361
Net foreign currency translation | 0 |
Amortization expense | (143) | (62)
Net balance at December 31, 2012 | 1,961 | 1,642
December 31, 2013 balance at cost | 2,271 |
Accumulated amortization | (310) |
Net balance at December 31, 2013 | 1,961 | 1,642
Patents and Trademarks [Member] | Other Acquisitions [Member] |  |
Indefinite-lived Intangible Assets [Line Items] |  |
Additions | 227 | 343
Patents and Trademarks [Member] | Cronto [Member] |  |
Indefinite-lived Intangible Assets [Line Items] |  |
Additions | 235 |
Other [Member] |  |
Indefinite-lived Intangible Assets [Line Items] |  |
Net balance at December 31, 2011 | 18 | 37
Net foreign currency translation | 61 |
Amortization expense | (168) | (19)
Net balance at December 31, 2012 | 996 | 18
December 31, 2013 balance at cost | 1,210 |
Accumulated amortization | (214) |
Net balance at December 31, 2013 | 996 | 18
Other [Member] | Other Acquisitions [Member] |  |
Indefinite-lived Intangible Assets [Line Items] |  |
Additions | 0 |
Other [Member] | Cronto [Member] |  |
Indefinite-lived Intangible Assets [Line Items] |  |
Additions | $ 1,085 |

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- Definition Accumulated amount of amortization of assets, excluding financial assets and goodwill, lacking physical substance with a finite life. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 350 -SubTopic 30 -Section 50 -Paragraph 2 -Subparagraph (a)(1) -URI http://asc.fasb.org/extlink&oid=7658586&loc=d3e16323-109275 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Statement of Financial Accounting Standard (FAS) -Number 142 -Paragraph 45 -Subparagraph a(1) -LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy. + Details
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- Definition Sum of the carrying amounts of all intangible assets, excluding goodwill, as of the balance sheet date, net of accumulated amortization and impairment charges. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 350 -SubTopic 30 -Section 45 -Paragraph 1 -URI http://asc.fasb.org/extlink&oid=6388964&loc=d3e16212-109274 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 350 -SubTopic 30 -Section 50 -Paragraph 2 -Subparagraph ((a)(1),(b)) -URI http://asc.fasb.org/extlink&oid=7658586&loc=d3e16323-109275 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Statement of Financial Accounting Standard (FAS) -Number 142 -Paragraph 42, 45 -LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy. + Details
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